Choose the correct option
You must/mustn't get to class late.
You mustn't get to class late.
I ....... go to school. (obligation or necessity)
I must go to school. or I have to go to school.
Can you use a mobile in the class?
No, I can't. or Yes, I can.
must
You _______ apologize; it isn't necessary.
You don't have to apologize; it isn't necessary.
You must/don't have to bring books to school every day.
You must bring books to school every day.
Visitors ..... get too close to lions. (prohibition)
Visitors mustn't get too close to lions.
Must you organize you bedroom?
Yes, I must.
obligation or necessity (2 words)
have/has to
You _________ tell the boss what happened, or else he'll fire you.
You must tell the boss what happened, or else he'll fire you.
Students can/have to be polite.
Pupils have to be polite.
Messi ...... play soccer very well. (ability)
Messy can play soccer very well.
Must students wear school uniform in high school?
Yes, they must.
abilities
can and can't
You _________ smoke in here; smoking is not allowed.
You mustn't smoke in here; smoking is not allowed.
She can/has to study more.
She has to study more.
...... I eat in the classroom? (permission)
Can I eat in the classroom?
Do you have to eat healthy food?
Yes, I do.
permission
Can and can't
I _______ be late. It's the most important meeting of the year.
I mustn't be late. It's the most important meeting of the year.
He mustn't /must do the test tomorrow. The teacher will not give a second chance.
He must do the test tomorrow.
What do children always ..... to do? Study and be nice. (necessity)
What do children always have to do?
Can doctors cure illnesses?
Yes, they can.
prohibitions
mustn't